JPS603442Y2 - Arm mounting device for lighting equipment, etc. - Google Patents

Description

[Detailed description of the invention] This invention relates to an arm mounting device for lighting equipment such as Jumpria, and is particularly applicable to devices in which the end of the arm is tightened and fixed to a mounting plate such as a wall plate of the equipment main body. The purpose is to easily position the mounting direction and install it without wobbling.

As this type of arm mounting device, there is a conventional example as shown in FIG. 1 or 2.

In Fig. 1, 1 is a pipe arm with a lighting device such as a jump rear light body attached to the free end, and the base end has a threaded part 3 with both sides cut into a flat shape and used as a positioning flat surface 2. By inserting the threaded portion 3 into a non-circular insertion hole 5 formed in an O-shape in a mounting plate 4 of the device body wall plate, etc., and tightening a nut 6 from the tip, the non-circular insertion hole 5 can be opened. With the mounting direction of the arm 1 being positioned by the non-circular wall 7 and the positioning plane 2, the mounting plate 4 is clamped and fixed between the screw portion 3 base 8 and the nut 6.

Furthermore, in FIG. 2, reference numeral 1 designates a pipe arm similar to the above, and the base end is threaded on the outer periphery, and a pair of notches l110, 10 are provided from both sides of the opening end periphery to the mounting base 9.
The projecting piece 12.12 is inserted into the insertion hole 13, which is formed in the mounting plate 4 similar to the above with a pair of protruding pieces 12.12 left uncut. Said notch groove 1
By inserting the nut 6 into the holes 0 and 10 and tightening the nut 6 from the tip, the mounting base 9 and the nut 6 are tightened with the mounting direction of the arm 1 positioned by the protruding pieces 12 and the notch grooves 10 and 10. The mounting plate 4 is clamped and fixed by the and.

However, according to these conventional examples, in the case of the one shown in FIG. There is a risk that the mounting strength against the force in the direction A will be weakened, and the force in the rotational direction A will cause wobbling and the mounting direction of the arm 1 will change. Due to the insertion into the hole 13, a gap must be provided between the pair of notch grooves 10, 1G and the pair of protruding pieces 12, 12, and as a result, the mounting strength against the force in the rotational direction A of the arm 1 is also reduced. If the nut 6 is tightened too much, the threaded end portion 11 will become stuck in the notched groove as shown in Fig. 2. 10,1
The arm 1 is tilted in the direction of G, that is, inward, and the engagement between the nut 6 and the threaded end portion 11 is incomplete, resulting in a so-called one-screw screw condition, which reduces the strength of the attachment of the arm 1 to the mounting plate 4. There is a drawback that it decreases significantly.

The present invention has been developed in view of the above points, and will be explained below according to the embodiment shown in FIG.

Reference numeral 1 denotes a pipe arm similar to the above, and the base end is threaded on the outer periphery and a pair of notch grooves 1G and 10 are bored from both sides of the opening end periphery to the mounting base 9.
1.

4 is a mounting plate similar to the above, and in this mounting plate 4, 1
4 is an insertion hole through which the tip threaded portion 11 is inserted; 15;
are a pair of projecting pieces that are left cut out on both sides of the insertion hole 14 and are bent in a direction approximately perpendicular to the mounting plate 4 at the proximal end of the left cut out portion, and are screwed onto the tip of the arm 1. When the part 11 is inserted into the insertion hole 14 of the mounting plate 4 and the nut 6 is tightened, the protrusion 16 enters into the screw hole 6a of the nut 6, and both side surfaces 16a, 16a of the protrusion 16 are inserted into the notch groove 10.
It is firmly fixed to both side walls 10a, 10a of the holder.

Since the gap between the projecting piece 16 and the notch groove 10 is eliminated in this way, there is no looseness when the arm 1 is attached to the mounting plate 4, and even when the force in the rotational direction A is applied to the arm 1, the arm 1 is not easily attached. The direction does not change, and it can be stably installed over a long period of time. This installation process also does not require minute positioning work as in the past, making assembly work easier. The groove wall 10alOa engages with both side surfaces 16a, 16a of the projecting piece 16 to prevent further inclination in the inward direction A, and the fitting between the nut 6 and the distal end threaded portion 11 does not loosen, thereby preventing the arm from loosening. The mounting strength of the mounting plate 1 to the mounting plate 4 does not decrease.

Incidentally, the same effect can be obtained even if the cutout grooves 10, 10 and the protrusions 16, 16 are provided on either side.

The arm mounting device for lighting equipment, etc. of the present invention is as described above, and in particular, the threaded end portion of the pipe arm of the lighting equipment, etc. is inserted into the insertion hole provided in the arm mounting plate and fixed by tightening with a nut. A notch groove is formed in at least one side of the threaded portion, and at least one side of the insertion hole is bent in a direction substantially perpendicular to the arm mounting plate, and both grooves of the notch groove are formed in at least one side of the insertion hole. Since the projecting pieces that attach to the wall on both sides are left uncut, there is no looseness when the arm is attached to the mounting plate, and even if a rotational force is applied to the arm, the mounting direction of the arm will not change. It can be stably attached over a long period of time, and since the protruding piece of the threaded tip fits into the notch groove, it will not tilt inward, so the fit between the nut and the threaded tip will not loosen. There is no reduction in the mounting strength of the arm to the mounting plate.
You can get something highly reliable.

Furthermore, according to the present invention, since the protruding piece is clamped and fixed by the threaded portion at the tip, the arm can be securely fixed to the mounting plate without requiring high machining precision, making assembly work easier. This can contribute to cost reduction.

[Brief explanation of the drawing]

The drawings all relate to arm mounting devices for lighting equipment, etc. Figure 1 is a diagram of a conventional example, A is an exploded view, the mouth is a cross-sectional side view of the main part, and Figure 2 is a diagram of another conventional example, A is an exploded view. 3 is a diagram of the embodiment of the present invention, where A is an exploded view, opening is a front view, and C is a sectional side view of essential parts. 4... Mounting plate, 14... Insertion hole, 1... Pipe arm, 11... Tip threaded portion, 6... Nut, 10...
...Notch groove, 16...projection piece.

Claims (1)

[Scope of utility model registration request] In a device in which a threaded end portion of a pipe arm of a lighting device or the like is inserted into an insertion hole provided in a mounting plate and fixed by tightening with a nut, a notch groove is bored on at least one side of the threaded portion,
A lighting device, etc., which is formed on at least one side of the insertion hole by leaving a protruding piece bent in a direction substantially perpendicular to the arm mounting plate and having both side surfaces engaged with both groove walls of the notched groove. arm mounting device.